Case: Final fit

Step 25: Case: Final fit

Once you're happy, remove the electronics and put the doublesided sticky foamtape on both the circuit board and the battery holder.

The tape keeps the circuit board in place as well as keeps the pins from shorting against the tin

You might have to push down on the battery holder once its in, to "pop-out" the bottom a little...the case will not quite close otherwise.

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chndt2008 says: Sep 12, 2010. 4:07 AM

Great! China already has the product, price $ 2, I believe they stole your technique. I am Chinese, but I hate the Chinese. . . But such products have a question, that is unstable and may damage the battery. Reduce the battery life, which is found after a lot of people use.

npandey2 in reply to chndt2008Aug 11, 2011. 9:06 PM

friend can you send me the schematic diagram of your chinese version at nitesh.pandey@ymail.com,i want do do practicle and make it myself,help is appriciated

lorddavis6 says: May 4, 2010. 7:39 AM

good work!!

wulfhoul says: Apr 3, 2010. 1:11 AM

do any of u know how to add a switch and led to this kit

jake21 says: Aug 7, 2008. 1:13 PM

can u make me one and ill buy it

ex-navy says: Jul 22, 2006. 11:35 AM

Really sweet project-Can I purchase a kit??? I have flexible solar (tiny) panels that will certainly fit the area. I would like to make one for my Neuros R2 recorder www.olson-engineering.com

kabeyun says: Jun 1, 2006. 10:34 AM

This is really an elegant little project. A comment & a question... C: As a certified paranoid, I'd be afraid that square of tape might somehow let exposed solders touch the case. I'd suggest cutting a PCB-shaped piece of tape instead. Q: Any chance the tops of the electrolytic caps could touch the closed lid? Maybe putting a dab of nail polish on top of each would insulate them. Great work!

liquiddoom in reply to kabeyunJun 6, 2006. 4:52 AM

Putting nail polish on the caps of electrolytic capacitors is generally not a good idea. The cap's purpose is to vent the capacitor (NASTY smoke, trust me) in the event of a horrible, stupid error to keep it from exploding. Just my $.02.

ladyada (author) in reply to kabeyunJun 3, 2006. 12:13 AM

the tin curves up inthe middle so as long as the square is in the middle you're good to go. the electrolytics are OK too.

dmhjah in reply to ladyadaAug 6, 2009. 10:23 AM

Hi I managed to put everything together and it works but I didn't have to much luck with the tape. Is there an electronics equivalent to a hot glue gun. Something that would keep the circuit board in place? Thanks David

josh_gipper says: Jun 4, 2006. 10:44 AM

Really sweet project no doubt. I don't know if anyone has mentioned (due to its popularity I didn't search all the comments) but 2AAs in a larger tin and a photovoltaic cell on the back to recharge the batteries. I'll throw the idea out there but that would certainly improve an already AWESOME project.